Spikelet callus (shape)

                            

brief                                                                                        square                                                                           oblong

                              

cuneate                                                                                     linear                                                                          globular

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith